demat-facturation/server/llm-trace.test.ts

import { afterEach, describe, expect, it, vi } from "vitest";
import { invokeLLMWithUserSettings, resolveLlmTrace } from "./_core/llm";

describe("resolveLlmTrace", () => {
  it("trace Manus Forge avec le modèle réellement résolu", () => {
    expect(resolveLlmTrace({ aiProvider: "manus" })).toEqual({
      provider: "manus",
      model: "gemini-2.5-flash",
      transport: "manus-forge",
    });
  });

  it("trace Mistral et Gemini sans déduire le modèle depuis un champ historique", () => {
    expect(resolveLlmTrace({ aiProvider: "mistral" })).toEqual({
      provider: "mistral",
      model: "mistral-large-latest",
      transport: "mistral-api",
    });
    expect(resolveLlmTrace({ aiProvider: "gemini" })).toEqual({
      provider: "gemini",
      model: "gemini-2.0-flash",
      transport: "gemini-api",
    });
  });

  it("reste sur Mistral lorsque le fournisseur est absent", () => {
    expect(resolveLlmTrace()).toEqual({
      provider: "mistral",
      model: "mistral-large-latest",
      transport: "mistral-api",
    });
  });
});

describe("invokeLLMWithUserSettings", () => {
  afterEach(() => vi.unstubAllGlobals());

  it("retourne la trace Manus correspondant au payload réellement envoyé", async () => {
    const fetchMock = vi.fn().mockResolvedValue({
      ok: true,
      json: async () => ({ id: "test", created: 0, model: "gemini-2.5-flash", choices: [] }),
    });
    vi.stubGlobal("fetch", fetchMock);

    const invocation = await invokeLLMWithUserSettings(
      { messages: [{ role: "user", content: "test non sensible" }] },
      {
        aiProvider: "manus",
        manusForgeApiKey: "test-only-not-a-secret",
        manusForgeApiUrl: "https://forge.example.test",
      },
    );

    expect(invocation.trace).toEqual({
      provider: "manus",
      model: "gemini-2.5-flash",
      transport: "manus-forge",
    });
    expect(fetchMock).toHaveBeenCalledWith(
      "https://forge.example.test/v1/chat/completions",
      expect.objectContaining({ method: "POST" }),
    );
    const request = fetchMock.mock.calls[0][1] as RequestInit;
    expect(JSON.parse(String(request.body))).toMatchObject({ model: "gemini-2.5-flash" });
  });
});